Pittsburgh
 
Data courtesy of:
 

 
AQI: Good (0 - 50) AQI: Moderate (51 - 100) AQI: Unhealthy for Sensitive Groups (101 - 150) AQI: Unhealthy (151 - 200) AQI: Very Unhealthy (201 - 300) AQI: Hazardous(301 - 500) Action DayAction Day
 
Local Air Quality Resources
Current Air Quality Index | Forecast | Ozone Action Program
 
State Air Quality Resources
Air Quality Partnership of Lehigh Valley - Berks
Air Quality Partnership of the Delaware Valley
Air Quality Partnership of the Susquehanna Valley
American Lung Association (ALA) of Pennsylvania
PA Allergy & Asthma Association
Pennsylvania DEP - BAQ - Contacts
Pennsylvania DEP - BAQ - Current Air Quality Index (AQI) by Area
Pennsylvania DEP - Bureau of Air Quality (BAQ)
Pennsylvania DEP – Air Quality Forecast Home Page
Pennsylvania DEP – Home Page
Southwest PA Air Quality Partnership
Air Quality Forecast
Today's High Tomorrow's High
Air Quality Index (AQI)
60 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
Air Quality Index (AQI)
65 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5)
60 
Moderate
Particles (PM2.5)
65 
Moderate
Forecast Discussion: Current Conditions: As of 2 PM on Thanksgiving, overcast skies prevail over the region as the coastal storm system, which provided rain/snow for many across the Northeastern US yesterday, moves into the north Atlantic Ocean. At the same time, a high pressure system moves in over the northern Plains / Midwest US. This high is keeping our air cold, with reading currently hovering in the 30s. PM 2.5, though, remains near the good /moderate threshold. Expect air quality to remain elevated through the weekend as warmer air moves in... *** On Friday, expect partly sunny in the morning to give way to mostly cloudy skies in the afternoon as the area of high pressure, which was over the Plains on Thursday, drops south and east and over the Ohio Valley / Mid-Atlantic region. This presence of this high nearby will continue to promote light wind flow while swinging our winds out of the west. As a result, we will see temperatures to remain low as the core of the cold air drops in over western PA. Highs will be in the low to mid 30s. The combination of the snow cover along with the high pressure system moving overhead will promote limited mixing near the surface. It is this limit in mixing along with all of the holiday traffic associated with Black Friday that will help to keep PM 2.5 levels within the low moderate range. *** For Saturday, mostly cloudy skies will continue to be the rule as the area of high pressure, which moved in over our area on Friday, continues its eastward progression and pushes out into the Atlantic. The return flow along the backside of the high will be out of the southwest. The southwesterly winds will, in turn, force warmer, more humid air into western PA. In fact, afternoon highs are likely to peak in the mid 40s. With warm air moving in aloft, the likely of an inversion forming will still exist. Therefore, the inversion along with light wind flow throughout the day should keep a limited mixed environment over our area, forcing PM 2.5 levels into the moderate range again. *** On Sunday, overcast skies will persist throughout the day as west, southwest winds persist over the day. An area of high pressure will continue to reside out in the Atlantic at the same time a cold front begins to push into the Great Lakes / Midwestern region. With the presence of the front, expect the winds to pick up in intensity. The winds will help drive temperatures into the 50s but will limit PM 2.5 formation during the afternoon. However, PM 2.5 levels will remain elevated in the morning thanks to carryover from the previous day. Therefore, while not as high as Saturday, expect PM 2.5 levels to stay within the moderate threshold. *** For Monday, mostly cloudy skies will continue to rule the day as the cold front, which was off to our north and west on Sunday, continues to drop south and east near our area. By the afternoon, the front will begin to push through western PA. As a result, expect a line of light showers to develop over our area. The passing of the front will help to limit afternoon highs to the 40s. It the frontal passage that will finally help to drop PM 2.5 levels across the region. --Nolan

Current Conditions
Air Quality Index (AQI)
observed at 6:00 EST
37
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5) 37 Good
Ozone 24 Good

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